Author: Robert Hyatt
Date: 07:52:00 10/22/05
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On October 22, 2005 at 10:33:40, joseph soney wrote: >Yes bios is set to ccNUMA and node interleaving is disabled. It is certainly more than possible that the windows NUMA code was whacked by the NUMA changes I made prior to the WCCC event. I ran on Suse 9.3 linux which is a totally different system, and I did a good bit of tweaking and tuning to get the performance up. I initially saw numbers something like what you are seeing, but found a posix threads "time()" bug on redhat that was reporting bogus time values, which was blowing up the NPS/time numbers being displayed. We went to Suse and the problem went away, but I still had to do quite a bit of tweaking to get it to run reasonably (the wccc 2005 log files are on my ftp box if you want to see what the nps numbers looked like during the actual games played). Perhaps Eugene has a dual-core system running windows he can test on to see if I broke something or left an extra Lock()/Unlock() stuck in there somewhere for windows that is killing performance...
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